66.47% is the change from 507 to 844
Calculation steps:
[( 844 - 507 ) ÷ 507] x 100 = 66.47%
Formula
Percentage change = [(844 - 507) / 507] x 100
Subtract the new number by the original number
844 - 507 = 337
337 ÷ 507 = 0.6646942800788954
0.6646942800788954 x 100 = 66.47%